71922 ACD/P4AQBCA
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71922 ACD/P4AQBCA
Basic Information
System of measurement
Metric
Weight
3.44 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
110 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
150 mm
Outside diameter tolerance
-0.004mm to 0
Width
80 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
28
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
35100 lbf
Radial static load rating
61875 lbf
Limiting speed
10 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Quadruplex Back-to-Back (QBC)
Number of bearings in matched set
4
Universal matching bearing
No (Standard)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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71922 ACD/P4AQBCA Bearing Product Overview & Core Advantages
The 71922 ACD/P4AQBCA is a precision angular contact ball bearing configured in a quadruplex back-to-back (QBC) matched set. Engineered to the exacting P4A tolerance class, this bearing delivers exceptional rotational accuracy and dimensional stability. Its primary advantage lies in its ability to handle combined radial and axial loads simultaneously with high rigidity, making it ideal for applications demanding extreme precision and reliability. The extra light preload (Class A) ensures smooth, low-friction operation right from installation.
71922 ACD/P4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71922 | Basic bearing series and size designation (110mm bore, 150mm OD, 80mm width). |
| ACD | Angular Contact design with a 25° contact angle. |
| P4A | Indicates a high-precision tolerance class with enhanced running accuracy. |
| QBC | Specifies a Quadruplex Back-to-Back matched arrangement of four bearings. |
71922 ACD/P4AQBCA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The quadruplex back-to-back (QBC) arrangement creates an extremely rigid bearing system capable of withstanding heavy combined loads and significant moment loads. This configuration provides superior axial and radial stiffness.
- Precision Performance: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for high-speed, high-accuracy applications.
- Optimized Internal Design: Features a phenolic resin cage, which offers excellent strength-to-weight ratio and is suitable for high-speed operation. The 25° contact angle is optimized for supporting substantial axial loads in addition to radial loads.
- Superior Material: Constructed from chrome steel for both rings and balls, providing high fatigue life and durability under demanding operating conditions.
71922 ACD/P4AQBCA Bearing Typical Application Areas
This high-precision, high-rigidity bearing set is specifically designed for advanced machinery, including:
- High-Precision Machine Tool Spindles
- High-Speed Machining Centers
- Precision Grinding Spindles
- Aerospace Positioning Systems
- Other applications requiring ultra-high rigidity and exceptional rotational accuracy.
